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Purifying water with eggs

28.11.2022

Found an unusual way to purify water from microplastics. This will help to get rid of the main environmental problem - the lack of drinking water.

You can purify water at home. If suddenly it was not in the tap, and you got it somewhere on the street. Probably, the problem of acute shortage of drinking water on a planetary scale will soon be solved. And chicken eggs will help in this.

The idea arose by chance. American chemist Craig Arnold was sitting at a dinner meeting of colleagues at Princeton University and began to examine the bread in his sandwich.

Then he thought that the structure of this bread could be used in an airgel to filter water. Arnold and his assistants then began experimenting with bread recipes with extra carbon.

The first samples of airgels did not have the necessary durability. Then the experiments continued with individual ingredients. And finally, there was an unexpected discovery: egg white with a little added carbon showed the necessary results.

The test has not yet been completed, but it is already clear that the egg white airgel filters out salt and microplastics from sea water with an efficiency of 98% and 99%, respectively.

How is this airgel created? A mixture of egg white and carbon is frozen, then heated to 900 degrees in an oxygen-free environment. In structure, it resembles the same bread that gave Arnold the idea.

A new airgel made up of carbon filaments and graphene sheets has proven to be more efficient than activated carbon filters. The main thing is that it does not require electricity. Water passes through the filter with the help of gravity.

In the near future, airgel based on egg whites will be produced on an industrial scale.

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